We included **HMH Into Math Grade 2 Answer Key PDF** **Module 1 Lesson 2 Develop Fluency with Addition Using Mental Strategies and Properties** to make students experts in learning maths.

## HMH Into Math Grade 2 Module 1 Lesson 2 Answer Key Develop Fluency with Addition Using Mental Strategies and Properties

I Can add in any order, add zero, and use strategies to find sums.

**Spark Your Learning**

Choose two numbers. How can you show the sum of the numbers?

Answer:

Explanation:

The numbers i chose are 9 and 5

The addition facts are 9 + 5 = 14, 5 + 9 = 14.

Have children work in pairs. Read the following: Choose two numbers. How can you show the sum of the numbers you choose? Hove children write two addition facts to represent the sum.

**Build Understanding**

Francie draws 7 pictures on Monday. She draws 5 pictures on Tuesday. How many pictures does she draw?

A. How can you use tools to show the problem?

Answer:

Explanation:

7 + 5 = 12

Francie have 12 pictures.

B. What addition fact can you use to solve this problem?

___ + ____ = _____

Answer:

7 + 5 = 12

C. How can you change the order of the addends to write a related addition fact?

Answer:

7 + 5 = 12

5 + 7 = 12

12 – 5 = 7

12 – 5 = 7

D. How many pictures does Francie draw?

____ pictures

Answer:

7 + 5= 12

Francie drew 12 pictures.

Mr. Weston picks 6 red tulips and 8 white tulips from his garden. How many tulips does he pick?

A. How can you write related addition facts to solve the problem?

___ + ___ = ____

___ + ___ = ____

Answer:

6 + 8 = 14

8 + 6 = 14

B. Solve. Mr. Weston picks ___ tulips.

Answer:

6 + 6 = 12, 12 + 2= 14

6 + 8 = 14

Explanation:

Mr. Weston picked 14 tulips

José has 8 red blocks. He has 0 green blocks. How many blocks does he have?

A. How can you show this problem?

Answer:

B. What addition fact can you use to solve this problem?

___ + ___ = _____

Answer:

8 + 0 = 8

0 + 8 = 8

C. Solve. Jase has ___ blocks.

Answer:

8 + 0 = 8

Explanation:

Jase has 8 blocks.

**Turn and Talk** What do you know about the sum when you add 0 to a number?

**Step It Out**

1. There are 9 frogs in a pond. There are 3 frogs on the shore. How many frogs are there?

A. Make a concrete model of the problem. Draw to show what you did.

Answer:

B. Count on to add. Start at q, Count on 3.

9, ___, ___, ____

Answer:

9, 12, 15, 18

C. Write an addition fact to show the problem. Solve.

___ + ___ = ____ ____ frogs

Answer:

9 + 3 = 12

Explanation:

9 + 3 =

Make ten:

9 + 1 = 10, 10 + 2 = 12

There are 12 frogs.

**Check Understanding Math Board**

Question 1.

There are 8 toy rockets and 7 dolls in a toy box. How many toys are in the toy box? ____ toys

Answer:

15 toys

Explanation:

8 + 7 = 15

Make ten:

8 + 2 = 10, 10 + 5 = 15

There are 15 toys in the toy box.

**Find the sum.**

Question 2.

___ = 9 + 2

Answer:

11

Explanation:

9 + 2 = 11

Make ten:

9 + 1 = 10, 10 + 1= 11

The sum of 9 and 2 is 11.

Question 3.

o + 5 = ___

Answer:

5

Explanation:

0 + 5 = 5

the sum of 0 and 5 is 5.

**On Your Own**

Question 4.

**Attend to Precision** There are 8 roses on one rose bush. On another rose bush, there are 2 roses. How

many roses are there? Explain the strategy you used.

Answer:

10

Explanation:

8 + 2 = 10

There are 10 roses.

Question 5.

**Reason** There are 4 white goats in a field. There are 7 brown goats. How many goats are in the field?

___ goats

Answer:

11

Explanation:

4 + 7 = 11

Make ten:

4 + 6 = 10, 10 + 1= 11

There are 11 goats in the field.

**Use Structure** Find the sum.

Question 6.

6 + 2 = ____

Answer:

8

Explanation:

6 + 2 = 8

The sum of 6 and 2 is 8.

Question 7.

0 + 6 = ____

Answer:

6

Explanation:

0 + 6 = 6

The sum of 0 and 6 is 6.

Question 8.

___ = 3 + 8

Answer:

11

Explanation:

3 + 8 = 11

Make ten:

3 + 7 = 10, 10 + 1= 11

The sum of 3 and 8 is 11.

Question 9.

___ = 8 + 8

Answer:

16

Explanation:

8 + 8 = 16

Make ten:

8 + 2 = 10, 10 + 6 = 16.

The sum of 8 and 8 is 16.

Question 10.

**Open Ended** What addition strategy would you choose to solve 3 + 9? Explain why.

Answer:

Mental addition strategy

Explanation:

3 + 9 =

Make ten:

3 + 7 = 10, 10 + 2 = 12

So, 3 + 9 = 12.

**On Your Own**

**Use Structure** Solve. Show your work.

Question 11.

There are 9 children at one table. There are 0 children at another table. How many children are there?

___ children

Answer:

9

Explanation:

9 + 0 = 9

There are 9 children.

Question 12.

Malik has 6 horse puzzles and 5 cat puzzles. How many puzzles does she have?

____ puzzles

Answer:

11 puzzles

Explanation:

6 + 5 =

Make ten:

6 +4 = 10, 10 + 1= 11

There are 11 puzzles with Malik.

**Use Repeated Reasoning** Find the sum.

Question 13.

4 + 3 = ___

Answer:

7

Explanation:

4 + 3 = 7

The sum of 4 and 3 is 7.

Question 14.

___ = 7 + 2

Answer:

9

Explanation:

7 + 2 = 9

The sum of 7 and 2 is 9.

Question 15.

___ = 8 + 4

Answer:

12

Explanation:

8 + 4 = 12

Make ten: 8 + 2 = 10, 10 + 2 = 12.

The sum of 8 and 4 is 12.

Question 16.

7 + 0 = ____

Answer:

7

Explanation:

The sum of 7 and 0 is 7.

**I’m in a Learning Mindset!**

What did I learn in addition to practicing related facts?

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